[Bug ld/10912] New: [Regression] --as-needed/--no-as-needed no longer works.

[hjl dot tools at gmail dot com]

When building glibc, I got

address@hidden glibc-32bit]$ gcc -m32 -nostdlib -nostartfiles -o
/export/build/gnu/glibc-32bit/build-i686-linux/nptl/tst-_res1 
-Wl,-dynamic-linker=/lib/ld-linux.so.2   -Wl,-z,combreloc -Wl,-z,relro
-Wl,--hash-style=both /export/build/gnu/glibc-32bit/build-i686-linux/csu/crt1.o
/export/build/gnu/glibc-32bit/build-i686-linux/csu/crti.o `gcc -m32
--print-file-name=crtbegin.o`
/export/build/gnu/glibc-32bit/build-i686-linux/nptl/tst-_res1.o
/export/build/gnu/glibc-32bit/build-i686-linux/nptl/tst-_res1mod2.so
/export/build/gnu/glibc-32bit/build-i686-linux/nptl/libpthread_nonshared.a
/export/build/gnu/glibc-32bit/build-i686-linux/nptl/libpthread.so 
-Wl,-rpath-link=/export/build/gnu/glibc-32bit/build-i686-linux:/export/build/gnu/glibc-32bit/build-i686-linux/math:/export/build/gnu/glibc-32bit/build-i686-linux/elf:/export/build/gnu/glibc-32bit/build-i686-linux/dlfcn:/export/build/gnu/glibc-32bit/build-i686-linux/nss:/export/build/gnu/glibc-32bit/build-i686-linux/nis:/export/build/gnu/glibc-32bit/build-i686-linux/rt:/export/build/gnu/glibc-32bit/build-i686-linux/resolv:/export/build/gnu/glibc-32bit/build-i686-linux/crypt:/export/build/gnu/glibc-32bit/build-i686-linux/nptl
/export/build/gnu/glibc-32bit/build-i686-linux/libc.so.6
/export/build/gnu/glibc-32bit/build-i686-linux/libc_nonshared.a -lgcc
-Wl,--as-needed -lgcc_s  -Wl,--no-as-needed `gcc -m32
--print-file-name=crtend.o`
/export/build/gnu/glibc-32bit/build-i686-linux/csu/crtn.o
/usr/local/bin/ld:
/export/build/gnu/glibc-32bit/build-i686-linux/nptl/tst-_res1.o: undefined
reference to symbol '_res'
/usr/local/bin/ld: note: '_res' is defined in DSO
/export/build/gnu/glibc-32bit/build-i686-linux/nptl/tst-_res1mod1.so so try
adding it to the linker command line
/export/build/gnu/glibc-32bit/build-i686-linux/nptl/tst-_res1mod1.so: could not
read symbols: Invalid operation
collect2: ld returned 1 exit status
address@hidden glibc-32bit]$

-- 
           Summary: [Regression] --as-needed/--no-as-needed no longer works.
           Product: binutils
           Version: 2.21 (HEAD)
            Status: NEW
          Severity: normal
          Priority: P2
         Component: ld
        AssignedTo: unassigned at sources dot redhat dot com
        ReportedBy: hjl dot tools at gmail dot com
                CC: bug-binutils at gnu dot org,nickc at redhat dot com


http://sourceware.org/bugzilla/show_bug.cgi?id=10912

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